Jeremiah darling



J. DARLING. EOATAEY STEAM ENGINE.

PatentedJuly 9,1867.

@auch tstss gat-mit @frn -JEEEMINH DARLING, 0E oINCiNNA-TL OHIO.' .Letters Patent No. 66,570, datedfuly 9, 1867.

rMPRovENENT 1N BOTANY STEAM ENGINES.

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TO ALL 'WHOM IT MAY CONCERN:

Be it known that I, JEREMIAH DARLING, of the city of Cincinnati, county .of Hamilton, andState of Ohio, have invented a new and Improved Steam Engine; and I do hereby declare the following to be an exact description thereof, reference being had to theaccompanying drawing-s, 4and to the letters'of reference marked thereon, making a part of this specification, in Awhichl Figure 1 represents a cross-section of side elevation.

Figure 2, a cross-section of end view.

The nature of my invention consists inthe construction of the cylinder by which the edges, the valves, and

the en'ds of the paokings 'all revolve against the face-plate, with springs and rollers attached to the valves thatoperate around the eccentric, and between the eccentric and the lugs or guides foi' the rollers. The abutments also on the face-plate iit and grind against the back end of4 the cylinder, so as to preserve the wear equal to that that runs against the face-plate. Y

Arepresents the frame thatsupports the engine; B, the outside ofthe cylinder; C, the outside of the faceplate; D, the shaft that revolves with the cylinder B, and operates through 'the`face-pl :t C that Visstationary,

and is fastened down permanently to the frame A.' The lvalves E E E E, on the ihsidp'of the cylinder B, are aemicircularplates, with-.springs Fandntcllrs G attached, and having packings. Hon-,each side of tlievalye, and a spring, J', to forcethe packings to their bearings against each valve to prevent the passage of steam. That partof the shaft D that revolves with the cylinder B, operates in aboXK, whilst thevopposite end of shaft D'revolves in the centre of the face-plate C. On the centre of the face-plate 4C is a solid eccentric, L, with two lugs or guides M, one on each side, for the purpose of'allowing therollers G'to passaround and upon the eccentric L, and between it and the guides M, for the purpose of holding the valves E to their seats in the cylinder to prevent the passage of the steam. y There is also on the face-plate C an abutment, N, on each side, one opposite theother, and in each abutment N arc pack-ings P, with a spring, R, between to hold the paekings to their seats against the cylinder B to preventthe passage of the steam. Four apertures in the faceplate C are for thereception and discharge ofthe steam, the reception or inlet always diagonally opposite to each other,

and the discharge or egress also diagonally opposite. A groove, T, in the face-plate C, extends from'the aper-l tures S, on an incline, to the packing P of the abutment N, for the purpose of relieving the valve E of resistance orV any reactionary force 'whilst passing over the entire abutment N.A V shows grooves that `may be cut into the face-plate C, and-the edges of cylinder B to insert a packing if necessary. To keep the cylinder B steam-tight, I have two bolts, W, passing across the frame parallel with the shaft D, fonthe purposeof moving the-box K so as to regulate the tightness of the cylinder byvstarting the nut of bolt W, or the screw X, against the end of the shaft D, and by this means I also kccp the packings and valves to their places steam-tight.

By my invention I equalize the pressure of thc steam on both sides, having the ingress and egress apertures S always diagonally opposite each other, which prevents the friction on the opposite side, as usual with an ordinary rotary engine that takes the'steam upon one side; Aand may therefore use my engine for forcing air or water, as well as bedriven by steam or water.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the semicircular valves E with their springs F and rollers G, operating as lherein described. v

2. I also claim the cylinder, when constructed with its valves E and packings H, and operating'against a.' stationary fr ceplate, C, havingits eccentric L, guides M, abutments N, all arranged and combined as herein described and-for the purposes set forth.

JEREMIAH DARLING.

Witnesses:

IJ. FRANKLIN Ramsar, DANIEL Ramsar. 

